Sewing machine



W. EVERS SEWING MACHINE. APPLICATION man Anal 24, 1919 RENEWED NOV. 1s.1921..

1,407, 49, Patented Feb. 28, 1922.

I: 3 SHEETS-SHEET 1- lime/M07 V/ ///Aiai; w a 6W, Q m MWTVQM W. EVERS.

SEWING MACHINE.

APPLICATION FILED APR. 24. 19m.v RENEWED NOV. 18. 1921. 1,407,849.

Patented Feb. 28, 1922.

3 SHEETS-SHEET 2.

W. EVERS.

sgwms MACHINE.

KPFLICATION F'ILEQ APR. 24, 1-9L9. RENEWED NOV. 18, 1921.

1,407,849. v I Patented Feb.28,1922.

3 SHEETS-SHEET 3.

- 35 Inflerzior UNITED STATES "PATENT OFFICE.

WILLIAM EVERS, OF BUFFALO, NEW YORK.

. SEWING MACHINE.

Specification of Letters Patent. P t t d e 23, 1922 Application filed April 24, 1919, Serial No. 292,248. Renewed November 18, 1921. Senal No. 516,249.

To all whom it may cmwcm Be it known that I, \VILLIAM Evens, a citizen of the United States, residing at Buffalo, in the county of Erie and State of New York, have invented new and useful Improvements in Sewing Machines, of which the following is a specification.

This invention relates to the class of sewin machines which are employed principa ly by shoe repairers and which are especially useful for mending cuts andfor button-holing. p

In such machines, as hitherto.constructe'd, the feeding foot in'addition to its automatic backward and forward motion is capable of being turned by hand alternately in opposite or different directions to, produce zig-zag stitches across cuts in ashoe, or along the edges of button holes, the foot beingturned to a position diagonally of the cut or button h le'in order to feed or advance the work stitching, as desired.

, 1 n. th c p yi as well as shift it laterally to produce the zig zag stitches.

I This hand operation or the feeding foot is comparatively slow and tedious and requires special'care and attention, to produce uniform stitching.

It is the principal object of my invention toeflt'ect the turning or oscillating motion of the feeding. foot by automatic means of simple and reliable construction, inorderto increase; thecapac-ity of the machine and insure neat and uniform work. a

h A Qfurtherobject is the pr'ovision oflconvenient means "for adjusting theffoot-turnmg mechan1sm v tofl produce'coarse or fine drawings: Figured 1s a fragmentary, sectional s de elevation of a. sew ng machine embodying the invention.

Figure2 is a verticallongitudinal section on line 2 i2 5 .v j Figure 3 isa similar section on l ne 3 3, Fig. 5.; Figure 1 isa vertical'section of the lower portion of the armhead at. right angles to Fig. 1., Figure 5 is .8 e lrtqp Pla vie F gu e 6 and '36. carried by said bar.

parts in a different position. Figure 13 is a fragmentary rear view of the machine.v Figure 14 is a side elevation of the arm-head, partly in section. Figure 15 isa sectional eleyation of parts of the foot-reversing mechanlsm. Similar.cl1aracters of reference indicate corresponding parts throughout the several views. v

I 15 indicates the usual hollow arm of the machine having a: suitable base, not shown, and l6 isthe horizontal shaft journaled in the arm and provided at its projecting end with the customary hand and balance wheel 17, and the band-pulleys 18 for driving said shaft, ina well known manner.

19 indicates the needle-barguided in th usual oscillating sleeve or bushing 20 journaled-in the arm-head 21, the barbeing acmated by the customary lever 22.

, Arranged in the longitudinal groove 23 of said sleeve is the bar 2 1. whichcarries the feeding-foot 25. This bar is jointed at its upper end'to the usual oscillating collar or bearing 26 which surrounds the needlebar-19 and is carried bythe cross head28.

As shown in Figs. 5 and 14C, this cross- .head has the usual vertically-sliding rod'29 guided in the arm-head and heldinits depressed position by. the spring 30 which ing from said rod. The parts just .men-

tioned, including the feeding foot, are raised by the, customary cam-lever 32 which. en-

gages the lower end of said wing;

@The' usual mechanism .is shown in the drawings for producing the" ordinary back- Iward and' forward feed motion of the foot 25. This mechanism comprisesa'verticallymovable ring 33 arranged horizontally below engages a notchedwing or plate 31 projectthe arm head. and carried by an upright.

slidebar 34 guided in said head and'reciprocated by a grooved cam '35 secured to the shaft 16 and, engaging a stud or roller Said ring is provided in-its inner; side with thef-annular" groove 37: which receives the upper arm of a bell ,crank lever 38. Asshown in Fig. 4, the divided pivot 39 0f this leveris carried by ears 40 depending from a plate 41seis ooupledto the bar of the feed-foot by the customar loop 42. By this'co'nstruction when b119- shaft 16 is rotated, the grooved cured to the lower end of the sleeve 20. The. bifurcated lowerarm of this bell crank lever ring 33 is reoiprocated vertically, vibrating said bell crank lever and the-feeding foot,

in a well known manner.

In addition to the hand lever 32 for lift-v lug 47 secured to the adjacent portion of the spring 30, whereby the lever 4L5 is raised, causing the feeding-foot "to' be elevated through the lever 246, spring 30 and slide rod 29. v j

The bar of the feeding-foot, being fitted in the'groove of the oscillating sleeve 20, is compelled to rock or turn therewith, to change the position of the foot relatively to the cut to be mended or the button-hole to be reinforced. Suchoscillation of the'sleeve is effected automatically preferably by the mechanism shown in the drawings, which is constructed as follows: Y

cured to the upperend of said sleeve 20, and 49 ahorizontally-sliding rack'b'ar engaging said Wheel and movable in suitable guides 50 and 51; This rack-bar is recipro: cated from the shaft 16 by a grooved'cam '52 secured to said shaft" and operating a horizontal slide 53, a lever 54"actuated by said'slide, and a link 55 connecting said lever with the rack bar. The slide 53 carries an oscillating head or button 56 having tenons 57 which engage the groovesof the cam 52, this rocking capacity of the tenon's' being necessary to permit them to follow the curves of the cam groove. The slide 53 is provided at its front end i with a downwardly-extending arm 58 carrying a verticall adjustable tudinahslot 62' for receiving the pin- 63,

stud 59 which engages a substantially longitudinal slot60 in the lever 54. The slide 53' is preferablyguided in a 15131653 'removably secured-to the arm15, andthe lever 54cis fulcrumed at 6lto a'narm or bracket 53 of said plate; By the above adjustment, the throw of said lever and the extent of -oscillation of the feeding-food may be reg ulated; as desired; To afford a further'range of adjustment for thispurpose, the lever '54 1s provlde'd 1n'itsupper end with a longiwhich connects saidlev'er with the link 55.

The operationof the; machine is as fol- Assuming that a' cut 'orslit in a shoe is to be mended, the feeding-foot is; lifted and the shoe 1s passed over the horn in the'u'sual -Wa';y; with the cut located at one side of the needle: Upon lowering the feeding-foot and operating the machine, the work is aut0- thrown'out ofaction matically fed past the needle in a zig zag course, producing stitches of that form across the cut, as shown in Figs. 8 and 9. To effect this compound forward and lateral movement of the work, the feeding-foot must be so placed or adjusted as tostand diagonally of the cut at both extremes of its oscillatory movement, as shown in the figures just referred to. The angle of these diagonal positions may be increased or diminished by the adjustable"connections between the rack bar 49' and the slide53, hereinbefore described, and 'thisvariation in angle 'd'eterminesthe fineness or coarseness'of the stitches.

To prevent displacement or twisting of the work, the feed'ing foot" must be automatically lifted Wholly clea'r thereof before beginning its reversin movement, andthe lifting lever 45' engaged by the stud 44 are properly shaped for this purpose.

This automatic turning-or reversing acj tion of the feeding-foot not only 'eXp'edit-es 48 indicates a' gear wheel or segment sethe work and increases the capacity o f' th machine, but produces a more uniform and neater stitch than can be obtained by effectin such reversing action by hand hile the vmachine is especially service able for shoe-repairing, it is equally useful forearms hol'ing', this in Figs. IOan'd 11; j g

To facilitate the angulf adjtstmefit of the oscillating feeding-foot; one end offthe link 55 ispreferabl detachableffi'oin the adjoinin memberse 'the'foot-turning methamsm; n its rtenedycqnstrde ien; the rear end of'the link is provided with a notch 64; which enga es'the' end 'b'olt 63", as shown in Fig. 15. 3 5pm; disconnectin'", the link from this lever, the rack bar f9 may" be desired angular position, after which the link is re-engaged withsaid iever,

use 'teinginustrated To enaba the' niachine to be used. for oidinarystitchiii'g', ether t an-zigzag say alo the curved edge of a patch; the -sleeve'f20 is preambi provided with: the us al hasdles 65 rtr'tnrnin itmanually, "Tlijdetachahle iconnectio'n55 "permits the automatijc foqt-dscillatin mechanism, to (be llllljig such hand OI i"- I claim asmy inventioni i 1; In ama'chine of the character V the combination of anoseillat'ory feedingfoot, means for vibrating the foot, and'automane means for chan ing the s position or a the ,fdot after each as sticks to produce a zig z'ag stitch.

2. In amachine of the character described,

the combination of an oscillator feedingfoot, means for'vibrating the oot, automatic means for changing the an ular position of the foot after each fee stroke to produce zig-zag stitches, and means for'automatically lifting the foot clear of the work before each reversal thereof.

3. In a machine of the character described, the combination of an oscillatory feedingfoot, means for vibrating the foot, and auto matic means for oscillating the foot after each feed stroke to produce zig-zag stitches, including a gear wheel and a rack bar engaging said wheel.

4. In a machine of the character described, the combination of an oscillatory feedingfoot, means for vibrating the foot, and automatic means for oscillating the foot after each feed stroke to produce zig-zag stitches including a gear wheel, a rack bar engagin said wheel, a rotary shaft, and a cam on sai shaft for reciprocatin said rack bar.

5. In a machine of t e character described, the combination of a feeding-foot, means for vibrating the foot, an oscillatory member engaging said foot to cause it to turn therewith, a gear wheel connected to said oscillatory member, a rack bar engaging said wheel, a rotary shaft carrying a cam, and a slide operated by said cam and connected with said rack bar.

1 her an 6. In a machine of the character described, the combination of an oscillatory member, a feedingdfoot connected to said member to turn therewith, means for vibrating the foot, a gear wheel for actuatin said oscillatory member, a rack bar engaging said wheel, a rotary shaft carrying a cam, a slide actuated by said cam, and an adjustable connection between said slide and said rack bar for varyin the throw of said oscillating memthe foot. 7

7 In a machine of the character described, the combination of an oscillatory feedingfoot, means for vibratin the foot, and automatic means for oscillatlng the foot including an oscillatory wheel and a reciprocating member engaging said wheel, driving mechanism, and an adjustable connection between said reciprocating member and said driving mechanism.

8. In a machine of the character described, the combination of an oscillatory feedingfoot, means forvibrating the foot, and automatic means for oscillating the foot after each feed stroke to produce zig-zag stitches including a gear wheel, a rack bar engaging said wheel, driving mechanism and a link detachably connecting said rack bar with said driving mechanism.

WILLIAM Evans. i 

